US20070029133A1 - Device for modulating noise in a motor vehicle - Google Patents

Device for modulating noise in a motor vehicle Download PDF

Info

Publication number
US20070029133A1
US20070029133A1 US11/328,718 US32871806A US2007029133A1 US 20070029133 A1 US20070029133 A1 US 20070029133A1 US 32871806 A US32871806 A US 32871806A US 2007029133 A1 US2007029133 A1 US 2007029133A1
Authority
US
United States
Prior art keywords
cross
gas conduits
flow
chambers
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
US11/328,718
Other versions
US7377359B2 (en
Inventor
Marcus Hofmann
Sascha Rossa
Roudolf Starobinski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Assigned to DAIMLERCHRYSLER AG reassignment DAIMLERCHRYSLER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HOFMANN, MARCUS, ROSSA, SASCHA, STARBINSKI, ROUDOLF
Publication of US20070029133A1 publication Critical patent/US20070029133A1/en
Assigned to DAIMLER AG reassignment DAIMLER AG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: DAIMERCHRYSLER AG
Application granted granted Critical
Publication of US7377359B2 publication Critical patent/US7377359B2/en
Adjusted expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/04—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more silencers in parallel, e.g. having interconnections for multi-cylinder engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/165—Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
    • F01N13/017—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel the purifying devices are arranged in a single housing

Definitions

  • the invention relates to a device for noise configuration in a motor vehicle with an internal combustion engine having at least two exhaust conduits connected to different cylinders of the engine and having a cross-flow section each enclosed by a housing and the housings being in communication with each other by at least one cross-flow opening.
  • the gas conduits are interconnected by means of a cross-flow section formed by a housing which encloses the gas conduits and which has at least two chambers in each of which one of the gas conduits is disposed, each of the gas conduits being in communication with the respective chamber by which it is enclosed by means of a respective cross-flow opening and the two chambers being in communication with one another by means of at least one cross-flow opening which is remote from the cross-flow openings of the gas conduits so as to provide for a phase shift of the sound waves of the gas flowing through the housing.
  • the odd-numbered multiples of the 1.5 th engine order that is to say the secondary orders, are thus once again part of the sound characteristic of the internal combustion engine, so that, in spite of the presence of the cross-flow section, a sporty sound characteristic of the engine can advantageously be achieved.
  • a similar effect, that is to say a corresponding canceling of certain engine orders, is prevented in internal combustion engines with other numbers of cylinders.
  • the invention also resides in a motor vehicle having an internal combustion engine with a device according to the invention.
  • FIG. 1 shows an internal combustion engine having a twin-pipe exhaust system and a cross-flow section according to the invention between the two exhaust pipes;
  • FIG. 2 shows an enlarged illustration of the cross-flow section shown in FIG. 1 ;
  • FIG. 3 shows a section through the housing cross-flow section taken along line III-III of FIG. 2 ;
  • FIG. 4 shows a sleeve for at least partially closing off a cross-flow opening of one of the gas conduits in a first setting
  • FIG. 5 shows the sleeve in FIG. 4 in a second setting
  • FIG. 6 shows an internal combustion engine having a twin-pipe exhaust system and a cross-flow section between the two exhaust pipes according to the prior art.
  • FIG. 6 shows a highly schematic illustration of an internal combustion engine 1 for a motor vehicle (not illustrated) which in the present case has two cylinder banks 2 and 3 which each have three cylinders 4 .
  • An intake system (not illustrated) which has corresponding inlet lines and which can be of known construction leads to the internal combustion engine 1 which is in a V-layout.
  • the exhaust gases which are produced in the cylinders 4 of the internal combustion engine 1 leave the latter by means of the exhaust system 5 which has two exhaust pipes 6 and 7 , assigned to the two cylinder banks 2 and 3 , respectively.
  • the two exhaust pipes 6 and 7 are connected to one another by means of a so-called cross-flow section 8 which allows resonance discharge of the cylinders 4 of the internal combustion engine 1 . Since the function principle of the cross-flow section 8 and the resonance discharge which this allows are known per se, these are not described in any further detail in the following.
  • the cross-flow of the exhaust gases via the cross-flow section 8 from one exhaust pipe 6 to the other exhaust pipe 7 and vice versa and the specific ignition sequence of the internal combustion engine 1 in a V-layout result in certain frequencies or engine orders in the sound characteristic of the internal combustion engine 1 being cancelled out or at least approximately cancelled out.
  • the internal combustion engine 1 having six cylinders 4 , it is the odd-numbered multiples of the 1.5 th engine order, that is to say the 1.5 th , the 4.5 th , the 7.5 th etc. engine orders, that are cancelled out and can thus no longer contribute to the sound characteristic of the internal combustion engine 1 .
  • the cross-flow section 8 in the case of the internal combustion engine 1 according to the invention is formed as illustrated in figures 1 , 2 and 3 .
  • the cross-flow section area 8 ′ includes a housing 9 which encloses the two exhaust pipes 6 and 7 and which is divided into two chambers 11 and 12 by a wall 10 .
  • the chamber 11 surrounds the exhaust pipe 6 and the chamber 12 surrounds the exhaust pipe 7 . This can be seen more clearly in FIG. 3 .
  • the exhaust pipe 6 is provided with a cross-flow opening 13 which leads to the chamber 11
  • the exhaust pipe 7 is provided with a cross-flow opening 15 which opens to the chamber 12 and the two chambers 11 and 12 are connected to one another by means of a cross-flow opening 14 in the wall 10 .
  • the exhaust gas flow also flows on through the two exhaust pipes 6 and 7 and in this way leaves the exhaust system 5 , resonance discharge of the internal combustion engine 1 being possible even with this cross-flow section 8 and an acoustic connection additionally being provided.
  • the cross-flow openings 13 and 15 of the two exhaust pipes 6 and 7 to the chambers 11 and 12 are formed by perforated sections of the exhaust pipes 6 and 7 .
  • the cross-flow opening 14 in the wall 10 between the two chambers 11 and 12 is also formed in such a way that the wall 10 in this region is perforated or formed as a perforated metal plate.
  • a sleeve 16 in order to influence the sound characteristic of the internal combustion engine 1 , can be arranged around one or also around both of the exhaust pipes 6 and 7 , which sleeve 16 is displaceable in the longitudinal direction of the respective exhaust gas pipe 6 or 7 according to the arrow A and can in this way at least partially close off the respective cross-flow opening 13 or 15 and thus restrict the exhaust gas flow indicated by the arrows B.
  • both the amplitude and the phase position of the sonic waves assigned to the respective exhaust pipes 6 and 7 are influenced.
  • cross-flow opening 14 between the two chambers 11 and 12 can be at least partially closed off in a manner not illustrated, for example by means of a plate or similar, for influencing the sound characteristic of the internal combustion engine 1 .
  • Such adjustment of the cross-flow openings 13 , 14 or 15 can also occur during operation of the internal combustion engine 1 .
  • the cross-flow section 8 is designed for the two exhaust pipes 6 and 7 as gas conduits, though the gas conduits could also be inlet lines which lead to the internal combustion engine 1 and which could be connected by means of the cross-flow section 8 which is designed in a similar or identical manner.
  • the cross-flow section 8 could also theoretically be designed for more than two gas conduits.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

In a device for noise configuration in a motor vehicle which has an internal combustion engine with at least two gas conduits connected to different cylinders of the engine, the gas conduits are interconnected by means of a cross-flow section formed by a housing which encloses the gas conduits and which has at least two chambers in each of which one of the gas conduits is disposed, each of the gas conduits being in communication with the respective chamber by which it is enclosed by means of a respective cross-flow opening and the two chambers being in communication with one another by means of at least one cross-flow opening which is remote from the cross-flow openings of the gas conduits so as to provide for a phase shift of the sound waves of the gas flowing through the housing.

Description

  • This is a continuation-in-part application of international application PCT/Ep2004/007498 filed Jul. 8, 2004 and claiming the priority of German application 103 31 620.5 filed Jul. 12, 2003
    • BACKGROUND OF THE INVENTION
  • The invention relates to a device for noise configuration in a motor vehicle with an internal combustion engine having at least two exhaust conduits connected to different cylinders of the engine and having a cross-flow section each enclosed by a housing and the housings being in communication with each other by at least one cross-flow opening.
  • In internal combustion engines having twin-pipe exhaust systems, it is known to provide a so-called cross-flow section between these two exhaust pipes in order to allow resonance discharge of the internal combustion engine. Such engines are normally internal combustion engines having six, eight or twelve cylinders in a V arrangement.
  • As a result of the ignition sequence of internal combustion engines of this type and by the cross-flow of the exhaust gas from one exhaust pipe into the other, it is however to be observed by way of example that in the sound characteristic of a 6 cylinder internal combustion engine, the odd-numbered multiples of the 1.5th engine order, so in particular the 1.5th and the 4.5th engine order, cancel each other out. Precisely these secondary orders are however necessary for a sporty noise, so that internal combustion engines in a V-layout with exhaust systems of this type frequently have a sound which is regarded by the driver as not sporty enough. This is also the case in a similar way for internal combustion engines having other numbers of cylinders.
  • In DE 102 12 257 A1, it is sought to eliminate the generally existing problem of an insufficiently sporty sound by means of a line which branches off from the intake duct and a hollow body which is arranged in this line and includes an element which can oscillate. This known device is effective, but it requires a relatively large outlay.
  • It is therefore an object of the present invention to provide a device for noise configuration in a motor vehicle which allows a cross-flow between the at least two gas conduits and yet provides for a sporty engine exhaust sound using simple means.
    • SUMMARY OF THE INVENTION
  • In a device for noise configuration in a motor vehicle which has an internal combustion engine with at least two gas conduits connected to different cylinders of the engine, the gas conduits are interconnected by means of a cross-flow section formed by a housing which encloses the gas conduits and which has at least two chambers in each of which one of the gas conduits is disposed, each of the gas conduits being in communication with the respective chamber by which it is enclosed by means of a respective cross-flow opening and the two chambers being in communication with one another by means of at least one cross-flow opening which is remote from the cross-flow openings of the gas conduits so as to provide for a phase shift of the sound waves of the gas flowing through the housing.
  • As a result of this arrangement of the cross-flow openings between the chambers relative to the openings of the at least two gas conduits, the exhaust flow continues to flow through the two exhaust pipes and leaves the exhaust system, so that, with the device according to the invention, resonance discharge of the internal combustion engine is possible in a simple manner without adversely affecting the power and consumption of the engine.
  • With the extended path that the sonic waves must cover as a result of the connection according to the invention of the two gas conduits, and the acoustic coupling of the latter achieved therby, a phase shift between the two flows and the sonic waves associated with them in the respective gas conduits is achieved, as a result of which, in the case for example of a six-cylinder internal combustion engine, the canceling of the odd-numbered multiples of the 1.5th engine order is prevented. According to the invention, the odd-numbered multiples of the 1.5th engine order, that is to say the secondary orders, are thus once again part of the sound characteristic of the internal combustion engine, so that, in spite of the presence of the cross-flow section, a sporty sound characteristic of the engine can advantageously be achieved. A similar effect, that is to say a corresponding canceling of certain engine orders, is prevented in internal combustion engines with other numbers of cylinders.
  • The invention also resides in a motor vehicle having an internal combustion engine with a device according to the invention.
  • Advantageous embodiments of the invention will become apparent from the following description of an exemplary embodiment on the basis of the accompanying drawings:
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows an internal combustion engine having a twin-pipe exhaust system and a cross-flow section according to the invention between the two exhaust pipes;
  • FIG. 2 shows an enlarged illustration of the cross-flow section shown in FIG. 1;
  • FIG. 3 shows a section through the housing cross-flow section taken along line III-III of FIG. 2;
  • FIG. 4 shows a sleeve for at least partially closing off a cross-flow opening of one of the gas conduits in a first setting;
  • FIG. 5 shows the sleeve in FIG. 4 in a second setting; and
  • FIG. 6 shows an internal combustion engine having a twin-pipe exhaust system and a cross-flow section between the two exhaust pipes according to the prior art.
    • DESCRIPTION OF A PREFERRED EMBODIMENT
  • FIG. 6 shows a highly schematic illustration of an internal combustion engine 1 for a motor vehicle (not illustrated) which in the present case has two cylinder banks 2 and 3 which each have three cylinders 4. An intake system (not illustrated) which has corresponding inlet lines and which can be of known construction leads to the internal combustion engine 1 which is in a V-layout.
  • The exhaust gases which are produced in the cylinders 4 of the internal combustion engine 1 leave the latter by means of the exhaust system 5 which has two exhaust pipes 6 and 7, assigned to the two cylinder banks 2 and 3, respectively. The two exhaust pipes 6 and 7 are connected to one another by means of a so-called cross-flow section 8 which allows resonance discharge of the cylinders 4 of the internal combustion engine 1. Since the function principle of the cross-flow section 8 and the resonance discharge which this allows are known per se, these are not described in any further detail in the following.
  • The cross-flow of the exhaust gases via the cross-flow section 8 from one exhaust pipe 6 to the other exhaust pipe 7 and vice versa and the specific ignition sequence of the internal combustion engine 1 in a V-layout result in certain frequencies or engine orders in the sound characteristic of the internal combustion engine 1 being cancelled out or at least approximately cancelled out. In the present case of the internal combustion engine 1 having six cylinders 4, it is the odd-numbered multiples of the 1.5th engine order, that is to say the 1.5th, the 4.5th, the 7.5th etc. engine orders, that are cancelled out and can thus no longer contribute to the sound characteristic of the internal combustion engine 1.
  • This problem could be eliminated or at least lessened by reducing the diameter in the region of the cross-flow section 8, but resonance discharge would then no longer be possible, so that the performance of the internal combustion engine 1 would decrease dramatically. There is therefore a trade-off in this region between good performance and an appealing sound characteristic of the internal combustion engine 1.
  • In order to eliminate this conflict, the cross-flow section 8 in the case of the internal combustion engine 1 according to the invention is formed as illustrated in figures 1, 2 and 3. The cross-flow section area 8′ includes a housing 9 which encloses the two exhaust pipes 6 and 7 and which is divided into two chambers 11 and 12 by a wall 10. The chamber 11 surrounds the exhaust pipe 6 and the chamber 12 surrounds the exhaust pipe 7. This can be seen more clearly in FIG. 3.
  • In order to allow a cross-flow from the exhaust pipe 6 to the exhaust pipe 7 and vice versa and thus resonance discharge of the internal combustion engine 1 in spite of the initially complete line separation of the two exhaust pipes 6 and 7, the exhaust pipe 6 is provided with a cross-flow opening 13 which leads to the chamber 11, and the exhaust pipe 7 is provided with a cross-flow opening 15 which opens to the chamber 12 and the two chambers 11 and 12 are connected to one another by means of a cross-flow opening 14 in the wall 10. In spite of this construction, the exhaust gas flow also flows on through the two exhaust pipes 6 and 7 and in this way leaves the exhaust system 5, resonance discharge of the internal combustion engine 1 being possible even with this cross-flow section 8 and an acoustic connection additionally being provided.
  • The longer distance that the exhaust gas flow is required to cover through this design of the cross-flow section 8 through the chambers 11 and 12 results in a phase shift between the two exhaust gas flows and the sonic waves associated with them in the two exhaust pipes 6 and 7, so that complete canceling of the odd-numbered multiples of the 1.5th engine order, as described with reference to FIG. 6, is prevented. These odd-numbered multiples of the 1.5th engine order are thus once again in the sound characteristic of the internal combustion engine 1, so that a sporty sound characteristic of the latter results even with the cross-flow section 8 being present. In this case, the cross-flow opening 14 is situated as far away as possible from the cross-flow openings 13 and 15 so that there is as great a distance as possible for the exhaust gas to cover within the chambers 11 and 12 and hence as great a phase shift as possible.
  • In the enlarged illustration in FIG. 2, it can be seen that the cross-flow openings 13 and 15 of the two exhaust pipes 6 and 7 to the chambers 11 and 12 are formed by perforated sections of the exhaust pipes 6 and 7. In a similar way, the cross-flow opening 14 in the wall 10 between the two chambers 11 and 12 is also formed in such a way that the wall 10 in this region is perforated or formed as a perforated metal plate.
  • In order to influence the sound characteristic of the internal combustion engine 1, a sleeve 16, as illustrated in highly schematic form in FIGS. 4 and 5, can be arranged around one or also around both of the exhaust pipes 6 and 7, which sleeve 16 is displaceable in the longitudinal direction of the respective exhaust gas pipe 6 or 7 according to the arrow A and can in this way at least partially close off the respective cross-flow opening 13 or 15 and thus restrict the exhaust gas flow indicated by the arrows B. As a result, both the amplitude and the phase position of the sonic waves assigned to the respective exhaust pipes 6 and 7 are influenced. It is also conceivable that the cross-flow opening 14 between the two chambers 11 and 12 can be at least partially closed off in a manner not illustrated, for example by means of a plate or similar, for influencing the sound characteristic of the internal combustion engine 1. Such adjustment of the cross-flow openings 13, 14 or 15 can also occur during operation of the internal combustion engine 1.
  • In the present case, the cross-flow section 8 is designed for the two exhaust pipes 6 and 7 as gas conduits, though the gas conduits could also be inlet lines which lead to the internal combustion engine 1 and which could be connected by means of the cross-flow section 8 which is designed in a similar or identical manner. The cross-flow section 8 could also theoretically be designed for more than two gas conduits.

Claims (9)

1. A device for noise configuration in a motor vehicle which has an internal combustion engine (1) with at least two gas conduits (6, 7) connected to the engine (1), the at least two gas conduits (6, 7) being interconnected by means of a cross-flow section (8), the cross-flow section (8) including a housing (9) enclosing the at least two gas conduits (6, 7) and having at least two chambers (11, 12), each of the at least two gas conduits (6, 7) extending through one of the chambers (11, 12) and, each of the gas conduits (6, 7) being in communication with the respective chamber (11, 12) in which it is disposed by means of a respective cross-flow opening (13,15), the chambers (11, 12) being in communication with one another by means of at least one cross-flow opening (14) arranged remote from the cross-flow openings (13,15) of the gas conduits (6,7) so that there is a relatively large distance between the cross flow openings (13, 15) of the gas conduits (6, 7) and the cross-flow opening (14) between the chambers (11, 12) for the exhaust gas to cover within the chambers (11,12) in order to provide for a phase shift of the exhaust gas sound waves while permitting exhaust gas flow between the exhaust pipes.
2. The device as claimed in claim 1, wherein the cross-flow openings (13,15) of the gas conduits (6,7) to the associated chambers (11,12) are formed by means of perforations in the gas conduits (6,7).
3. The device as claimed in claim 1, wherein the cross-flow opening (14) between the at least two chambers (11, 12) is formed by means of a perforated section of a wall (10) which separates the two chambers (11, 12).
4. The device as claimed in claim 1, wherein means (16) are provided for at least partially closing the cross-flow openings (13 15) between the gas conduits (6, 7) and the associated chambers (11, 12).
5. The device as claimed in claim 4, wherein the means for at least partially closing the cross-flow openings (13, 15) is a sleeve (16) which is displaceable along the gas conduits (6, 7).
6. The device as claimed in claim 1, wherein the cross-flow opening (14) between the at least two chambers (11, 12) can be at least partially closed off.
7. The device as claimed in claim 1, wherein the gas conduits are exhaust pipes (6, 7).
8. The device as claimed in claim 1, wherein the gas conduits are air inlet lines.
9. A motor vehicle having an internal combustion engine including a device for noise configuration of the internal combustion engine (1) including at least two gas conduits (6, 7) connected to the engine (1), the at least two gas conduits (6, 7) being interconnected by means of a cross-flow section (8), the cross-flow section (8) including a housing (9) enclosing the at least two gas conduits (6, 7) and having at least two chambers (11, 12), each of the at least two gas conduits (6, 7) extending through one of the chambers (11, 12) and, each of the gas conduits (6, 7) being in communication with the respective chamber (11, 12) in which it is disposed by means of a respective cross-flow opening (13,15), the chambers (11, 12) being in communication with one another by means of at least one cross-flow opening (14) arranged remote from the cross-flow openings (13,15) of the gas conduits (6,7) so that there is a relatively large distance between the cross flow openings (13, 15) of the gas conduits (6, 7) and the cross-flow opening (14) between the chambers (11, 12) for the exhaust gas to cover within the chambers (11,12) in order to provide for a phase shift of the exhaust gas sound waves while permitting exhaust gas flow between the exhaust pipes.
US11/328,718 2003-07-12 2006-01-10 Device for modulating noise in a motor vehicle Expired - Fee Related US7377359B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10331620.5 2003-07-12
DE10331620A DE10331620A1 (en) 2003-07-12 2003-07-12 Device for noise shaping in a motor vehicle
PCT/EP2004/007498 WO2005005800A1 (en) 2003-07-12 2004-07-08 Device for modulating noise in a motor vehicle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/007498 Continuation-In-Part WO2005005800A1 (en) 2003-07-12 2004-07-08 Device for modulating noise in a motor vehicle

Publications (2)

Publication Number Publication Date
US20070029133A1 true US20070029133A1 (en) 2007-02-08
US7377359B2 US7377359B2 (en) 2008-05-27

Family

ID=33560078

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/328,718 Expired - Fee Related US7377359B2 (en) 2003-07-12 2006-01-10 Device for modulating noise in a motor vehicle

Country Status (4)

Country Link
US (1) US7377359B2 (en)
EP (1) EP1644622A1 (en)
DE (1) DE10331620A1 (en)
WO (1) WO2005005800A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070284186A1 (en) * 2006-06-09 2007-12-13 Arvin Technologies, Inc. Exhaust system
US20180149052A1 (en) * 2015-05-25 2018-05-31 Wärtsilä Finland Oy An acoustic attenuator for damping pressure vibrations in an exhaust system of an engine, an acoustic attenuation system using the attenuators, and method of damping pressure vibrations in an exhaust system of an engine
CN117232133A (en) * 2023-11-16 2023-12-15 珠海格力电器股份有限公司 Sound attenuation control method, silencer, outdoor unit and air conditioner

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10346479A1 (en) * 2003-10-02 2005-05-12 Bayerische Motoren Werke Ag Exhaust system for an internal combustion engine
DE102005052619B4 (en) * 2005-11-02 2012-10-18 J. Eberspächer GmbH & Co. KG Silencer for an exhaust system
JP2006348896A (en) * 2005-06-20 2006-12-28 Sango Co Ltd Silencer
DE102006020155A1 (en) * 2005-12-15 2007-06-21 Friedrich Boysen Gmbh & Co. Kg Exhaust system for internal combustion engines
KR101097241B1 (en) * 2006-01-17 2011-12-22 도요타 지도샤（주） Muffler structure for vehicle
DE102007007946B4 (en) 2007-02-17 2012-08-09 Daimler Ag Multi-flow exhaust system with crosstalk
DE102008061829A1 (en) * 2008-12-11 2010-07-08 J. Eberspächer GmbH & Co. KG X-pipe and associated exhaust system
DE102009032214B4 (en) 2009-07-06 2023-10-19 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Exhaust system of an internal combustion engine
DE102010003301B4 (en) * 2009-10-22 2014-12-04 Faurecia Abgastechnik Gmbh silencer
US8191676B2 (en) * 2010-11-04 2012-06-05 Ford Global Technologies, Llc Resonator for a dual-flow exhaust system
US8827035B2 (en) * 2012-12-03 2014-09-09 Ford Global Technologies, Llc Conformal transverse muffler
KR101511541B1 (en) * 2013-11-15 2015-04-13 현대자동차주식회사 Structure of dual exhaust system for cda engine
DK3141720T3 (en) * 2015-09-10 2019-02-04 Akrapovic D D Exhaust system for an internal combustion automotive engine
US11365658B2 (en) 2017-10-05 2022-06-21 Tenneco Automotive Operating Company Inc. Acoustically tuned muffler
DE102018124198A1 (en) 2017-10-05 2019-04-11 Tenneco Automotive Operating Company Inc. Acoustically tuned silencer
DE202017107307U1 (en) * 2017-11-30 2019-03-01 Rockerballs UG (haftungsbeschränkt) Switchable silencer for the exhaust gas flow of an internal combustion engine, especially in a motorcycle, as well as exhaust system with switchable silencer
US11199116B2 (en) 2017-12-13 2021-12-14 Tenneco Automotive Operating Company Inc. Acoustically tuned muffler
US11268430B2 (en) 2019-01-17 2022-03-08 Tenneco Automotive Operating Company Inc. Diffusion surface alloyed metal exhaust component with welded edges
US11268429B2 (en) 2019-01-17 2022-03-08 Tenneco Automotive Operating Company Inc. Diffusion surface alloyed metal exhaust component with inwardly turned edges
DE102021002535A1 (en) 2021-05-14 2022-11-17 Mercedes-Benz Group AG Exhaust system for a motor vehicle, in particular for a motor vehicle
DE102021002603A1 (en) 2021-05-18 2022-11-24 Mercedes-Benz Group AG Exhaust system for an internal combustion engine of a motor vehicle, in particular a motor vehicle

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2356782A (en) * 1941-10-15 1944-08-29 Gen Motors Corp Internal-combustion engine exhaust system
US2370259A (en) * 1941-10-16 1945-02-27 Gen Motors Corp Internal combustion engine exhaust system
US2573474A (en) * 1949-04-28 1951-10-30 Joseph P Marx Muffler containing inner and outer end walls and longitudinal chambers
US3388769A (en) * 1966-08-04 1968-06-18 Walker Mfg Co Dual inlet and outlet muffler
US3794139A (en) * 1973-01-02 1974-02-26 Tenneco Inc Muffler with plural inlets and outlets
US5214253A (en) * 1990-10-26 1993-05-25 Houston Jr Richard G Automotive exhaust system
US5351481A (en) * 1992-06-26 1994-10-04 Flowmaster, Inc. Muffler assembly with balanced chamber and method
US5519994A (en) * 1994-02-18 1996-05-28 Tennessee Gas Pipeline Company Muffler with inlet pipe equalizer
US5979583A (en) * 1996-07-25 1999-11-09 Honda Giken Kogyo Kabushiki Kaisha Muffler for motorcycle
US20010015301A1 (en) * 1997-09-24 2001-08-23 Kesselring Stephen H. Self-tuning exhaust muffler
US6530452B1 (en) * 1998-09-30 2003-03-11 Metso Paper, Inc. Reactive silencer for industrial air channels and its use
US6732510B2 (en) * 2002-02-06 2004-05-11 Arvin Technologies, Inc. Exhaust processor with variable tuning system
US6796402B1 (en) * 2003-04-17 2004-09-28 Dane Wagner Muffler having isolated dual flow baffle structure
US6912843B2 (en) * 2003-01-11 2005-07-05 Daimlerchrysler Ag Exhaust system for a multi-cylinder internal combustion engine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE721228C (en) * 1940-03-21 1942-05-29 Versuchsanstalt Fuer Luftfahrt Soundproofing system for aircraft engines
JPS57102508A (en) * 1980-12-16 1982-06-25 Nippon Radiator Co Ltd Muffler
GB2161215A (en) * 1984-07-05 1986-01-08 Shelburne Inc Exhaust systems for internal combustion engines
DE29811689U1 (en) 1998-07-01 1999-11-11 Brüll, Jochen, 79110 Freiburg Escapement device for safely opening a vehicle door
DE19947203A1 (en) 1999-10-01 2001-04-05 Audi Ag Stop limiting opening swing of vehicle door to prevent damaging scrapes or impact, arrests door at predetermined degree of opening as selected by user or limited by obstacles
DE10110884B4 (en) 2000-03-27 2010-01-21 Stabilus Gmbh An actuation system comprising a piston-cylinder unit in combination with a drive device
JP3645864B2 (en) * 2001-03-21 2005-05-11 ダイムラークライスラー アーゲー Equipment for noise configuration in motor vehicles
FR2824105A1 (en) * 2001-04-25 2002-10-31 Faurecia Sys Echappement Exhaust line for I.C. engine comprises two exhaust pipes whose outlets are connected by junction to same outlet pipe and valve connected between diversions tapped on each exhaust pipe
DE10132886A1 (en) 2001-07-06 2003-01-16 Bosch Gmbh Robert Method and device for opening and closing a part rotatably or tiltably mounted on the vehicle

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2356782A (en) * 1941-10-15 1944-08-29 Gen Motors Corp Internal-combustion engine exhaust system
US2370259A (en) * 1941-10-16 1945-02-27 Gen Motors Corp Internal combustion engine exhaust system
US2573474A (en) * 1949-04-28 1951-10-30 Joseph P Marx Muffler containing inner and outer end walls and longitudinal chambers
US3388769A (en) * 1966-08-04 1968-06-18 Walker Mfg Co Dual inlet and outlet muffler
US3794139A (en) * 1973-01-02 1974-02-26 Tenneco Inc Muffler with plural inlets and outlets
US5214253A (en) * 1990-10-26 1993-05-25 Houston Jr Richard G Automotive exhaust system
US5351481A (en) * 1992-06-26 1994-10-04 Flowmaster, Inc. Muffler assembly with balanced chamber and method
US5519994A (en) * 1994-02-18 1996-05-28 Tennessee Gas Pipeline Company Muffler with inlet pipe equalizer
US5979583A (en) * 1996-07-25 1999-11-09 Honda Giken Kogyo Kabushiki Kaisha Muffler for motorcycle
US20010015301A1 (en) * 1997-09-24 2001-08-23 Kesselring Stephen H. Self-tuning exhaust muffler
US6530452B1 (en) * 1998-09-30 2003-03-11 Metso Paper, Inc. Reactive silencer for industrial air channels and its use
US6732510B2 (en) * 2002-02-06 2004-05-11 Arvin Technologies, Inc. Exhaust processor with variable tuning system
US6912843B2 (en) * 2003-01-11 2005-07-05 Daimlerchrysler Ag Exhaust system for a multi-cylinder internal combustion engine
US6796402B1 (en) * 2003-04-17 2004-09-28 Dane Wagner Muffler having isolated dual flow baffle structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070284186A1 (en) * 2006-06-09 2007-12-13 Arvin Technologies, Inc. Exhaust system
US7650965B2 (en) * 2006-06-09 2010-01-26 Emcon Technologies Llc Exhaust system
US20180149052A1 (en) * 2015-05-25 2018-05-31 Wärtsilä Finland Oy An acoustic attenuator for damping pressure vibrations in an exhaust system of an engine, an acoustic attenuation system using the attenuators, and method of damping pressure vibrations in an exhaust system of an engine
US10781732B2 (en) * 2015-05-25 2020-09-22 Wärtsilä Finland Oy Acoustic attenuator for damping pressure vibrations in an exhaust system of an engine, an acoustic attenuation system using the attenuators, and method of damping pressure vibrations in an exhaust system of an engine
CN117232133A (en) * 2023-11-16 2023-12-15 珠海格力电器股份有限公司 Sound attenuation control method, silencer, outdoor unit and air conditioner

Also Published As

Publication number Publication date
DE10331620A1 (en) 2005-02-03
EP1644622A1 (en) 2006-04-12
WO2005005800B1 (en) 2005-03-10
US7377359B2 (en) 2008-05-27
WO2005005800A1 (en) 2005-01-20

Similar Documents

Publication Publication Date Title
US7377359B2 (en) Device for modulating noise in a motor vehicle
US6755279B2 (en) Controllable muffler system for internal combustion engine
US7562741B2 (en) Rear muffler assembly
US10746065B2 (en) Exhaust-gas system
US9109483B2 (en) Exhaust system for an internal combustion engine
US6830024B2 (en) Suction system for an internal-combustion engine
US6932189B2 (en) Device for noise structuring in a motor vehicle
US5623900A (en) Internal-combustion engine comprising an intake system
US8434590B2 (en) Muffler
CN106340289B (en) Noise transmission system for a motor vehicle
SE510530C2 (en) Device for sound attenuation in a duct system
US20160024989A1 (en) Exhaust Gas System for an Internal Combustion Engine and Method for Operating the Exhaust Gas System
US7942235B2 (en) Exhaust system for an internal combustion engine
US20110083924A1 (en) Muffler for vehicle
US6912843B2 (en) Exhaust system for a multi-cylinder internal combustion engine
US3338331A (en) Exhaust system with plural silencing units
US5473891A (en) Three-piece stamp formed connector for achieving equal length exhaust pipes
US6041748A (en) Pipe module
US20200256227A1 (en) Exhaust system as well as motor vehicle with an exhaust system
CN216043947U (en) Muffler for vehicle exhaust system
JP2000227057A (en) Intake device of engine
US3298458A (en) Exhaust pipe silencers with telescoped gas passage tubes
US20080011541A1 (en) Internal combustion engine
CN116146319A (en) Exhaust system tuner tube for reducing standing waves
JP2017190679A (en) Exhaust silencer

Legal Events

Date Code Title Description
AS Assignment

Owner name: DAIMLERCHRYSLER AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOFMANN, MARCUS;ROSSA, SASCHA;STARBINSKI, ROUDOLF;REEL/FRAME:017617/0945

Effective date: 20060116

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

AS Assignment

Owner name: DAIMLER AG, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:DAIMERCHRYSLER AG;REEL/FRAME:020746/0620

Effective date: 20071019

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362